<template>
  <div>
    <div class="gva-search-box">
      <el-form ref="elSearchFormRef" :inline="true" :model="searchInfo" class="demo-form-inline" :rules="searchRule"
               @keyup.enter="onSubmit"
      >
        <el-form-item label="创建日期" prop="createdAt">
          <template #label>
        <span>
          创建日期
          <el-tooltip content="搜索范围是开始日期（包含）至结束日期（不包含）">
            <el-icon><QuestionFilled/></el-icon>
          </el-tooltip>
        </span>
          </template>
          <el-date-picker v-model="searchInfo.startCreatedAt" type="datetime" placeholder="开始日期"
                          :disabled-date="time=> searchInfo.endCreatedAt ? time.getTime() > searchInfo.endCreatedAt.getTime() : false"
          ></el-date-picker>
          —
          <el-date-picker v-model="searchInfo.endCreatedAt" type="datetime" placeholder="结束日期"
                          :disabled-date="time=> searchInfo.startCreatedAt ? time.getTime() < searchInfo.startCreatedAt.getTime() : false"
          ></el-date-picker>
        </el-form-item>

        <el-form-item label="学号" prop="id">
          <el-input v-model="searchInfo.id" placeholder="搜索条件"/>

        </el-form-item>
        <el-form-item label="姓名" prop="name">
          <el-input v-model="searchInfo.name" placeholder="搜索条件"/>

        </el-form-item>
        <el-form-item label="班级号" prop="class_id">
          <el-input v-model="searchInfo.class_id" placeholder="搜索条件"/>

        </el-form-item>
        <el-form-item>
          <el-button type="primary" icon="search" @click="onSubmit">查询</el-button>
          <el-button icon="refresh" @click="onReset">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
    <div class="gva-table-box">
      <div class="gva-btn-list">
        <el-button type="primary" icon="plus" @click="openDialog">新增</el-button>
        <el-upload
            :action="uploadUrl"
            :show-file-list="false"
            :on-success="handleSuccess"
            :multiple="false"
        >
          <el-button
              type="primary"
              icon="upload"
          >批量导入
          </el-button>
        </el-upload>
        <el-button
            type="primary"
            icon="download"
            @click="exportExcelFunc"
        >模板下载
        </el-button>
        <el-button icon="delete" style="margin-left: 10px;" :disabled="!multipleSelection.length" @click="onDelete">
          删除
        </el-button>
      </div>
      <el-table
          ref="multipleTable"
          style="width: 100%"
          tooltip-effect="dark"
          :data="tableData"
          row-key="ID"
          @selection-change="handleSelectionChange"
          @sort-change="sortChange"
      >
        <el-table-column type="selection" width="55"/>

        <el-table-column align="left" label="日期" width="180">
          <template #default="scope">{{ formatDate(scope.row.CreatedAt) }}</template>
        </el-table-column>

        <el-table-column sortable align="left" label="学号" prop="stu_no" width="120"/>
        <el-table-column align="left" label="姓名" prop="name" width="120"/>
        <el-table-column align="left" label="班级号" prop="class_id" width="120"/>
        <el-table-column align="left" label="电话" prop="tel" width="120"/>
        <el-table-column align="left" label="照片">
          <template #default="scope">
            <img :src="scope.row.face" width="200" height="120"/>
          </template>
        </el-table-column>
        <el-table-column align="left" label="操作" fixed="right" min-width="240">
          <template #default="scope">
            <el-button type="primary" link icon="edit" class="table-button" @click="updateStudentFunc(scope.row)">变更
            </el-button>
            <el-button type="primary" link icon="delete" @click="deleteRow(scope.row)">删除</el-button>
          </template>
        </el-table-column>
      </el-table>
      <div class="gva-pagination">
        <el-pagination
            layout="total, sizes, prev, pager, next, jumper"
            :current-page="page"
            :page-size="pageSize"
            :page-sizes="[10, 30, 50, 100]"
            :total="total"
            @current-change="handleCurrentChange"
            @size-change="handleSizeChange"
        />
      </div>
    </div>
    <el-drawer destroy-on-close size="800" v-model="dialogFormVisible" :show-close="false" :before-close="closeDialog">
      <template #header>
        <div class="flex justify-between items-center">
          <span class="text-lg">{{ type === 'create' ? '添加' : '修改' }}</span>
          <div>
            <el-button type="primary" @click="enterDialog">确 定</el-button>
            <el-button @click="closeDialog">取 消</el-button>
          </div>
        </div>
      </template>

      <el-form :model="formData" label-position="top" ref="elFormRef" :rules="rule" label-width="80px">
        <el-form-item label="学号:" prop="stu_no">
          <el-input v-model="formData.stu_no" :clearable="true" placeholder="请输入学号"/>
        </el-form-item>
        <el-form-item label="姓名:" prop="name">
          <el-input v-model="formData.name" :clearable="true" placeholder="请输入姓名"/>
        </el-form-item>
        <el-form-item label="班级号:" prop="class_id">
          <el-select v-model="formData.class_id" placeholder="请选择">
            <el-option
                v-for="item in class_options"
                :key="item.value"
                :label="item.label"
                :value="item.value"
            >
            </el-option>
          </el-select>
        </el-form-item>
        <el-form-item label="电话:" prop="tel">
          <el-input v-model="formData.tel" :clearable="true" placeholder="请输入电话"/>
        </el-form-item>
        <video ref="video" width="200" height="120" autoplay></video>
        <button @click="takePhoto">拍照</button>
        <canvas ref="canvas" width="300" height="220" style="display:none;"></canvas>
        <img :src="formData.face" alt="Captured Image" v-if="photo">
      </el-form>
    </el-drawer>
  </div>
</template>

<script setup>
import {
  createStudent,
  deleteStudent,
  deleteStudentByIds,
  updateStudent,
  findStudent,
  getStudentList
} from '@/api/attendance/student'

// 全量引入格式化工具 请按需保留
import {
  getDictFunc,
  formatDate,
  formatBoolean,
  filterDict,
  filterDataSource,
  ReturnArrImg,
  onDownloadFile
} from '@/utils/format'
import {ElMessage, ElMessageBox} from 'element-plus'
import {ref, reactive, onMounted} from 'vue'
import {getClassList} from "@/api/attendance/class";

defineOptions({
  name: 'Student'
})

// 自动化生成的字典（可能为空）以及字段
const formData = ref({
  id: 0,
  stu_no: '',
  name: '',
  class_id: '',
  face: '',
  tel: ''
})


// 验证规则
const rule = reactive({
  id: [{
    required: true,
    message: '',
    trigger: ['input', 'blur'],
  },

    {
      whitespace: true,
      message: '不能只输入空格',
      trigger: ['input', 'blur'],
    }
  ],
  stu_no: [
    {required: true, message: '请输入学号', trigger: 'blur'},
    {min: 3, message: '最低3位字符', trigger: 'blur'}
  ],
  name: [
    {required: true, message: '请输入姓名', trigger: 'blur'},
    {min: 2, message: '最低2位字符', trigger: 'blur'}
  ],
  class_id: [
    {required: true, message: '请选择班级号', trigger: 'blur'},
    {min: 1, message: '最低2位字符', trigger: 'blur'}
  ],
})

const searchRule = reactive({
  createdAt: [
    {
      validator: (rule, value, callback) => {
        if (searchInfo.value.startCreatedAt && !searchInfo.value.endCreatedAt) {
          callback(new Error('请填写结束日期'))
        } else if (!searchInfo.value.startCreatedAt && searchInfo.value.endCreatedAt) {
          callback(new Error('请填写开始日期'))
        } else if (searchInfo.value.startCreatedAt && searchInfo.value.endCreatedAt && (searchInfo.value.startCreatedAt.getTime() === searchInfo.value.endCreatedAt.getTime() || searchInfo.value.startCreatedAt.getTime() > searchInfo.value.endCreatedAt.getTime())) {
          callback(new Error('开始日期应当早于结束日期'))
        } else {
          callback()
        }
      }, trigger: 'change'
    }
  ],
})

const elFormRef = ref()
const elSearchFormRef = ref()

// =========== 表格控制部分 ===========
const page = ref(1)
const total = ref(0)
const pageSize = ref(10)
const tableData = ref([])
const searchInfo = ref({})
// 排序
const sortChange = ({prop, order}) => {
  const sortMap = {
    id: 'id',
  }

  let sort = sortMap[prop]
  if (!sort) {
    sort = prop.replace(/[A-Z]/g, match => `_${match.toLowerCase()}`)
  }

  searchInfo.value.sort = sort
  searchInfo.value.order = order
  getTableData()
}

// 重置
const onReset = () => {
  searchInfo.value = {}
  getTableData()
}

// 搜索
const onSubmit = () => {
  elSearchFormRef.value?.validate(async (valid) => {
    if (!valid) return
    page.value = 1
    pageSize.value = 10
    getTableData()
  })
}

// 分页
const handleSizeChange = (val) => {
  pageSize.value = val
  getTableData()
}

// 修改页面容量
const handleCurrentChange = (val) => {
  page.value = val
  getTableData()
}

// 查询
const getTableData = async () => {
  const table = await getStudentList({page: page.value, pageSize: pageSize.value, ...searchInfo.value})
  if (table.code === 0) {
    tableData.value = table.data.list
    total.value = table.data.total
    page.value = table.data.page
    pageSize.value = table.data.pageSize
  }
}

getTableData()

// ============== 表格控制部分结束 ===============

// 获取需要的字典 可能为空 按需保留
const setOptions = async () => {
}

// 获取需要的字典 可能为空 按需保留
setOptions()


// 多选数据
const multipleSelection = ref([])
// 多选
const handleSelectionChange = (val) => {
  multipleSelection.value = val
}

// 删除行
const deleteRow = (row) => {
  ElMessageBox.confirm('确定要删除吗?', '提示', {
    confirmButtonText: '确定',
    cancelButtonText: '取消',
    type: 'warning'
  }).then(() => {
    deleteStudentFunc(row)
  })
}

// 多选删除
const onDelete = async () => {
  ElMessageBox.confirm('确定要删除吗?', '提示', {
    confirmButtonText: '确定',
    cancelButtonText: '取消',
    type: 'warning'
  }).then(async () => {
    const IDs = []
    if (multipleSelection.value.length === 0) {
      ElMessage({
        type: 'warning',
        message: '请选择要删除的数据'
      })
      return
    }
    multipleSelection.value &&
    multipleSelection.value.map(item => {
      IDs.push(item.ID)
    })
    const res = await deleteStudentByIds({IDs})
    if (res.code === 0) {
      ElMessage({
        type: 'success',
        message: '删除成功'
      })
      if (tableData.value.length === IDs.length && page.value > 1) {
        page.value--
      }
      getTableData()
    }
  })
}

// 行为控制标记（弹窗内部需要增还是改）
const type = ref('')

// 更新行
const updateStudentFunc = async (row) => {
  const res = await findStudent({ID: row.ID})
  type.value = 'update'
  if (res.code === 0) {
    formData.value = res.data.restu
    dialogFormVisible.value = true
    startCamera()
  }
}


// 删除行
const deleteStudentFunc = async (row) => {
  const res = await deleteStudent({ID: row.ID})
  if (res.code === 0) {
    ElMessage({
      type: 'success',
      message: '删除成功'
    })
    if (tableData.value.length === 1 && page.value > 1) {
      page.value--
    }
    getTableData()
  }
}

// 弹窗控制标记
const dialogFormVisible = ref(false)

// 打开弹窗
const openDialog = () => {
  type.value = 'create'
  dialogFormVisible.value = true
  startCamera()
}

// 关闭弹窗
const closeDialog = () => {
  dialogFormVisible.value = false
  formData.value = {
    id: 0,
    name: '',
    class_id: '',
  }
  closeCamera()
}
// 弹窗确定
const enterDialog = async () => {
  elFormRef.value?.validate(async (valid) => {
    if (!valid) return
    let res
    switch (type.value) {
      case 'create':
        res = await createStudent(formData.value)
        break
      case 'update':
        res = await updateStudent(formData.value)
        break
      default:
        res = await createStudent(formData.value)
        break
    }
    if (res.code === 0) {
      ElMessage({
        type: 'success',
        message: '创建/更改成功'
      })
      closeDialog()
      getTableData()
    }
  })
}

const video = ref(null);
const canvas = ref(null);
const photo = ref(null);
let stream = null;

const startCamera = async () => {
  try {
    stream = await navigator.mediaDevices.getUserMedia({video: true});
    video.value.srcObject = stream;
  } catch (err) {
    console.error("Error accessing the camera: ", err);
  }
};

const closeCamera = () => {
  if (stream) {
    stream.getTracks().forEach(track => track.stop());
    stream = null;
    video.value.srcObject = null;
  }
};
const takePhoto = () => {
  const context = canvas.value.getContext('2d');
  context.drawImage(video.value, 0, 0, canvas.value.width, canvas.value.height);
  photo.value = canvas.value.toDataURL('image/png');
  formData.value.face = photo.value
};


const baseUrl = import.meta.env.VITE_BASE_API
const uploadUrl = `${baseUrl}/stu/createStudentUpload`
const emit = defineEmits(['on-success'])
const handleSuccess = (res) => {
  if (res.code === 0) {
    ElMessage.success('导入成功')
    emit('on-success')
  } else {
    ElMessage.error(res.msg)
  }
}
const exportExcelFunc = async () => {
  const baseUrl = import.meta.env.VITE_BASE_API
  const url = `${baseUrl}/stu/templateExport`

  window.open(url, '_blank')
}

const class_options = ref([])
const getClass = async () => {
  const table = await getClassList({pageSize: 1000})
  if (table.code === 0) {
    for (let item of table.data.list) {
      console.log(item.name)
      class_options.value.push({
        'label': item.name,
        'value': item.class_id

      })
    }
  }
}
getClass()
console.log(class_options)
</script>


